setup a website auctioning off your minutes (at a high price) in space to perform experiments that do not require equipment or materials.
market is as a space version of the The Million Dollar Homepage - Own a piece of internet history!
in the event that you do go to space, I'd pledge 500hkd to know how many backflips you can do in 30 seconds of zeroG or some similarly world record worthy experiment. actually who cares for world records anymore, start your own galactic records registry
assuming you are up there for only 2 hours, i'd be getting a bargain for my 30 seconds as the value should be 6500HKD for every 30 seconds of your time.
think about it :P
Why dont you just challenge Parveen Crawford to an arm wrassle?
Winner gets her ticket on the first flight.
Now all you have to figure out is what to put in the pot to make her even consider gambling with her chance to become Hong Kong´s premier Space Chick.